layer of soil that differs in color and texture from the layers above or below it

bedrock

grinding away of rock by other rock particles carried in water, ice, or wind

erosion

solid rock beneath the soil

Dust Bowl

process by which water, ice, wind, or gravity moves weathered rock or soil

igneous rock

solid in which the atoms are arranged in a pattern that repeats again and again

ice wedging

type of rock that forms when particles from other rocks or the remains of plants and anumals are pressed and cemeted together

subsoil

rock that forms when a rock is changed by heat, pressure, or chemical reactions

rock cycle

process by which ore is melted to seperate the useful metal from other elements

soil conservation

soil conservation method in which the dead stalks from the previous year's crop are left in the ground to hold the soil in place

crop rotation

organism that breaks down wastes and dead organisms

mechanical weathering

layer of soil beneath the topsoil

acidic

chemical change in which a substance combines with oxygen

Use the "Printable HTML" button to get a clean page,
in either HTML or PDF,
that you can use your browser's print button to print.
This page won't have buttons or ads, just your puzzle.
The PDF format allows the web site to know how large a
printer page is, and the fonts are scaled to fill the page.
The PDF takes awhile to generate. Don't panic!